Description of problem:
System freezes when DMA is enabled on IT821x driven disks
Version-Release number of selected component (if applicable):
kernel-2.6.16-1.2080_FC5.i686
How reproducible:
quite frequently - nearly every time
Steps to Reproduce:
1.
2.
3.
Actual results:
Under anything approaching a reasonable load (such as serving files to windows
clients or NFS clients) the system will freeze completely.
Other causes have been ruled out by eliminating services, and hdparming the DMA
to off completely avoids the problem.
Expected results:
Obviously, I'd expect some reliability in DMA from this driver.
Additional info:
System info: Asus mobo, Celeron (not P4) cpu at 1800MHz, SiS chipset, IT8212 IDE
RAID controller (not in RAID mode)

Actually, the card was in RAID mode. Adding the appropriate kernel parameter to
GRUB to force bypass mode avoids the problem.
it821x.noraid=1
(Now I have a memory problem that occasionally locks the system! :-(

Note

You need to
log in
before you can comment on or make changes to this bug.